User manual

EKI-1121L/1122L/1124L User Manual 2
1.1 Overview
The EKI-1121L/1122L/1124L is a Linux-based RISC-grade embedded platform that
offers 2 LAN and 1/2/4 serial ports.
EKI-1121L/1122L/1124L could operate well under 0~60°C. Its compact size and light
weight could fit in industrial robust environment. With these advantages, EKI-1121L/
1122L/1124L is suitable for communication gateway for converting communication
protocol.
EKI-1121L/1122L/1124L is a perfect embedded ready platform that can shorten your
development time and offer rich networking interfaces to fulfill your diverse require-
ments.
1.2 Features
 Winbond ARM7 W90N740 80MHz Processor
 16 MB SDRAM onboard, 8 MB Flash
 1/2/4 independent RS-232/422/485 serial ports
 Dual 10/100 Mbps Ethernet
 1 channel LED for user define
 Ready platform for Linux build in flash
 Compact size and light weight
 0~60°C wide range operation temperature
 DIN-rail and wall mounting
 10/100 Mbps Base-T standard
 Surge protection for RS-485 line and power supply
 Automatic RS-485 data flow control
1.3 Specifications
 Boot-loader: Redboot
 Kernel version: linux-2.6.29.6-rt24
 C Library: uClibc 0.9.26
 OS boot up time <= 9 seconds
 Independent hardware watchdog timer
 Real-time clock with battery
 Ethernet communication compatibility: IEEE 802.3, IEEE802.3u
 Protocols: IPv4, ARP, ICMP, UDP, TCP, HTTP, SNMP v1/v2c, NTP, FTP, TFTP,
TELNET, PAP, CHAP, DHCP, PPP, PPPoE, NFS, SMTP
 Interfaces:
– Network: 2 10/100 BASE-T Ethernet ports
– Serial: 1/2 independent RS-232/422/485 serial ports
 Serial ports:
– EKI-1121L: 1 independent RS-232/422/485 serial port
– EKI-1122L: 2 independent RS-232/422/485 serial ports
– EKI-1124L: 4 independent RS-232/422/485 serial ports
 Connectors:
– Network: RJ-45
– Serial: DB9
Transmission speed: 50 bps to 921 Kbps
Parity bit: Odd, Even, None, Space, Mark